Occupational exposure to radon and natural gamma radiation in the La Carolina, a former gold mine in San Luis Province, Argentina - Anjos, Roberto Meigikos dos; Umisedo, Nancy Kuniko; Silva, Almy Anacleto Rodrigues da; Estellita, L; Rizzotto, M; Yoshimura, Elisabeth Mateus; Velasco, H; Santos, A. M. A. (Journal of Environmental Radioactivity, 2010)